摘要： 以南方典型籼稻品种Ⅱ优838和天优华占为对照,选择河南省3个代表性粳稻品种为供试材料,设置4个播期,研究了不同品种的主要农艺性状和产量表现,探讨了河南粳稻南移引种的适宜播栽期。结果表明:粳稻品种总体产量水平及生物量、株高、穗长、穗粒数低于籼稻品种,而结实率和经济系数高于籼稻品种。随着播栽期的推迟,各品种的生物产量、株高、穗长、穗粒数明显下降,抽穗期延迟,播始历期和全生育期缩短,结实率和经济系数则有增加趋势;从籽粒产量来看,粳稻品种呈降低趋势而籼稻品种则呈增加趋势。研究证实河南粳稻南移引种是可行的,适期播栽能达到或超过籼稻品种的产量水平。新稻20号适于作双季连晚,6月上旬播种7月上旬移栽,10月上中旬成熟;豫粳6号和新稻18号适于作单季晚稻,5月中下旬播种6月中旬移栽,9月中下旬至10月上旬成熟。

关键词: 水稻, 粳稻品种, 南移引种, 农艺性状, 产量, 播栽期

Abstract: The split block experiment was carried in Hangzhou with two control indica rice varieties,you 838 and Tianyouhuazhan,three tested japonica rice varieties introduced from Henan province,Yujing 6,Xindao 18 and Xindao 20,four sowing and transplanting dates. Grain yields and else main agronomical characters were analyzed and suitable sowing and transplanting dates were discussed. Results showed that under introduced to South condition , the grain yields and biomass,plant height , spike length,total and filled grains per spike of japonica rice varieties were inferior to indica rice varieties , but grain setting percentage and economic coefficients were superior to indica rice varieties. With delaying date of sowing and transplanting , biomass , plant height , spike length,total and filled grains per spike of japonica and indica rice varieties both declined or reduced obviously heading time defferred,interval from sowing to initial heading and whole growth stage both shortened , grains setting percentage and economic coefficients increased at a certain extent moreover grain yields of japonica rice varieties decreased and of indica rice varieties increased with the delay of sowing and transplanting date. The experiment results indicated that introducing japonica rice varieties in Henan to South China is feasible,the key technology is selecting appropriate japonica varieties and scheduling suitable sowing and transplanting.

Key words: Rice, Japonica rice variety, Introducing and planting from North to South, A}ronomical traits, Yield, Sowing and transplanting date

中图分类号: 

• S511.04